How can i create wordlist, lets say from word "world", so the program creates all plausible uppercase and lowercase strings from that word? e.g. "World", "WorlD"... , "WorLD" and so on...

I'd start with looking at all possible iterations of a given number, and adapt it for chars and case

methods/functions for upper/lowercase?

I haven't tested out this but it should give a rough base to start on

Combinations = []

word = allLettersToLower (word)
Foreach letter in word do
word[letter] = upper (letter)
Foreach letter2 in word do
newWord = word
newWord[letter] = upper(letter)
Combinations.add (newWord)
end
end

If word in combinations do
Print "Correct"
end

I would ask why you need it first to be honest...

I'd try StackOverflow

I don't see the need for it when you could just lower() the input.

Im just learning. Its only educational. It crossed my mind and i tought that this would be the best place to ask :D

Oh I see.

If you intended to make a dictionary for an attack...most programs have a function to do the same ;)

Stackoverflow most likely has an answer though

@SHA-256 I couldn't find that option in crunch or cupp. That is kinda what i want ;)

@Lenzs find a cracker that has Option to use Rules :)